Ok i am having the same problem. I have a 2004 Acura TL automatic. 105425 miles. I just changed the oil yesterday was about 400 miles over due. I also changed the spark plugs with a fresh set of ngk's. I tried to reset the maintanence light but it didn't go off. The light says maintanence required B4. So I looked up what the B4 was for in the owners manual and it said to

How do I turn off the Maintanence Required light . I tried to do it but it didn't turn off. Did I do something wrong? Here is what I did. On the MID I went to the screen were it says the mileage and oil life. Then I held down the reset button. Nothing happened. I have done this many times before and the MID would ask if I wanted to reset and I press ok. But it didn't turn off???

You'll probably get more help asking your question in the TL section since you guys have the onboard display and we just have a light, but here are the instructions for the RSX. Worth a shot IMO

You put your key in
leave the key in off and hold the trip meter reset button for 5 sec
keep holding the button and turn the key to the ON or II position
keep holding until the light turns off
If all it does is reset your trip meter, go back and try it again

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